Datasheet Linear Technology LT3570 — Даташит

LT3570
1.5A Buck Converter,
1.5A Boost Converter and
LDO Controller
DESCRIPTION FEATURES The LT®3570 is a buck and boost converter with internal
power switches and LDO controller. Each converter is
designed with a 1.5A current limit and an input range from
2.5V to 36V, making the LT3570 ideal for a wide variety
of applications. Switching frequencies up to 2.1MHz are
programmed with an external timing resistor and the
oscillator can be synchronized to an external clock up to
2.75MHz. 2.5V to 36V Input Voltage Range
Programmable Switching Frequency
from 500kHz to 2.1MHz
Synchronizable Up to 2.75MHz
VOUT(MIN): 0.8V
Independent Soft-Start for Each Converter
Separate VIN Supplies for Each Converter
Duty Cycle Range: 0% to 90% at 1MHz
Available in 24-Lead (4mm × 4mm) QFN and
20-Lead TSSOP Packages The LT3570 features a programmable soft-start function
that limits the feedback voltage during start-up helping
prevent overshoot and limiting inrush current. The LDO …